Answer:
sec
Explanation:
Consider the down direction as negative and upward direction as positive.
= mass of the bullet = 0.00728 kg
= mass of the wooden block = 2.75 kg
= velocity of the bullet before striking the block = 641 ms⁻¹
= velocity of the wooden block before collision
= velocity of the wooden block + bullet after collision = V
Using conservation of momentum
ms⁻¹
Consider the motion of the wooden block in free fall after being dropped:
= Initial velocity of the wooden block = 0 ms⁻¹
= acceleration of the wooden block = - 9.8 ms⁻²
= time of travel
= Final velocity of the wooden block = - 0.85 ms⁻¹
One the basis of above set of data , we can use the kinematics equation
sec
When your moving at a constant speed with boxes on top of each other in/on the cart and you stop the boxes will fall because 1- gravity, 2- the stop wasn't slow it was abrupt.
Answer:
Explanation:
work done by the beetle during the launch = F × d cosθ where θ is equal to 0°
change potential energy of the beetle = mgh = work done by the beetle
mgh = F d cosθ where h, height = 0.32 m and d = 0.796 mm
5.88 × 10-6 kg × 9.8 m/s² × 0.320 m / ( 0.796 ÷ 1000) m = F
F = 0.0232 N
b) the acceleration of the beetle in terms of g =
F = ma
mgh / d = ma
cancel m on both side
gh /d = a
0.320 g / ( 0.796 ÷ 1000) m = 402 .01 g
Answer:
friction. or gravity both ofbthem .....................
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